CN202374534U - Alternative current light emitting diode structure with overload protection unit - Google Patents
Alternative current light emitting diode structure with overload protection unit Download PDFInfo
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- CN202374534U CN202374534U CN2011205455471U CN201120545547U CN202374534U CN 202374534 U CN202374534 U CN 202374534U CN 2011205455471 U CN2011205455471 U CN 2011205455471U CN 201120545547 U CN201120545547 U CN 201120545547U CN 202374534 U CN202374534 U CN 202374534U
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- emitting diode
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Abstract
The utility model relates to an alternative current light emitting diode structure with an overload protection unit, which comprises an alternative current light emitting diode, a radiating unit and the overload protection unit, wherein the alternative current light emitting diode is bonded with the radiating unit in a thermal conductivity mode, and the overload protection unit is connected in serial between the alternative current light emitting diode and a power supply. Therefore, when overload current is input into the alternative current light emitting diode structure, the temperature of the overload protection unit rises due to the overload current, then a disconnection state is formed, and a disconnection state of the alternative current light emitting diode structure is formed timely, so that the power supply is blocked and cannot be input into the alternative current light emitting diode and an overload protection function is achieved.
Description
Technical field
The utility model relates to a kind of alternating-current light emitting diode structure, particularly relates to a kind of alternating-current light emitting diode structure with overload protection unit.
Background technology
Light-emitting diode is a kind of light source with suitable good physical properties, and it is that a kind of cold light source and brightness are high, especially is hundreds thousand of hours the useful life of light-emitting diode.Compare down with conventional light source again, light-emitting diode can use lower current drives, but can obtain the light output of equivalent, so the power consumption of light-emitting diode is quite low.In addition, the kind and the color of light-emitting diode are various, and therefore applicable scope is quite extensive.
Yet because light-emitting diode only can drive with DC power supply; Therefore when making led lamp; Must add and exchange control circuit and the pressure drop element that changes direct current; Just can be under the AC power of civil power the normal running led lamp, but not only improved the cost of manufacture of led lamp like this, also prolonged lighting the time of led lamp simultaneously.
Therefore led technology has developed the alternating-current light emitting diode that directly to use AC power to drive in recent years, and it is connected each other by many direct current light-emitting diodes and forms with parallelly connected.When therefore driving single alternating-current light emitting diode; Be actually and driven many direct current light-emitting diodes simultaneously; So need the higher electric current of input just can drive alternating-current light emitting diode, so be easy to cause alternating-current light emitting diode the problem of overload to occur, the surging of adding not timing in the AC power disturbs; Therefore if can't effectively avoid alternating-current light emitting diode to produce the problem of transshipping, with the damage that causes alternating-current light emitting diode.
This shows that above-mentioned existing alternating-current light emitting diode obviously still has inconvenience and defective, and demands urgently further improving in structure and use.In order to solve the problem of above-mentioned existence; Relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly; But do not see always that for a long time suitable design is developed completion, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel alternating-current light emitting diode structure with overload protection unit, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The purpose of the utility model is; Overcome the defective that existing alternating-current light emitting diode structure exists; And a kind of novel alternating-current light emitting diode structure with overload protection unit is provided; Technical problem to be solved is when making it work as alternating-current light emitting diode appearance overload phenomenon, can adjust the supply of power supply by the overload protection unit immediately, and then reach the effect of protection alternating-current light emitting diode.
Another purpose of the utility model is; A kind of novel alternating-current light emitting diode structure with overload protection unit is provided; Technical problem to be solved is to make it because the overload protection unit can be blocked the power supply of the luminous two rubbish pipes of input AC rapidly; Use and avoid alternating-current light emitting diode to receive the destruction of overload current, and then reach the prolongation alternating-current light emitting diode effect in useful life.
The purpose of the utility model and solve its technical problem and adopt following technical scheme to realize.
According to a kind of alternating-current light emitting diode structure with overload protection unit that the utility model proposes, it comprises: at least one alternating-current light emitting diode; At least one heat-sink unit, its carrying and heat conduction connect this alternating-current light emitting diode; And at least one overload protection unit, it is series between this alternating-current light emitting diode and the power supply.
The purpose of the utility model and solve its technical problem and also can adopt following technical measures further to realize.
Aforesaid alternating-current light emitting diode structure with overload protection unit, the distance between wherein said overload protection unit and this alternating-current light emitting diode is less than 3 centimetres.
Aforesaid alternating-current light emitting diode structure with overload protection unit, it further has a heat-conducting layer, and it is arranged between this alternating-current light emitting diode and this heat-sink unit.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said heat-conducting layer are polymer dielectric materials.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said overload protection unit is a conductive reed.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said overload protection unit has: a conductive reed, it electrically connects with this alternating-current light emitting diode and this power supply respectively; And a micro electronmechanical unit, it is incorporated into this conductive reed.
Aforesaid alternating-current light emitting diode structure with overload protection unit, it further has: one first electrode, it electrically connects this alternating-current light emitting diode and this power supply; And one second electrode, it electrically connects this overload protection unit and this power supply.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said first electrode and this second electrode are surfaces that is arranged at this heat-conducting layer.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said overload protection can be a temperature control unit.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said temperature control unit has: one first conductive layer; One temperature detecting layer, it is arranged on this first conductive layer; And one second conductive layer, it is arranged on this temperature detecting layer and with this alternating-current light emitting diode and electrically connects.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said second conductive layer and this second electrode electrically connect.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said second conductive layer has: one the 3rd conductive layer, itself and this alternating-current light emitting diode electrically connects; And one the 4th conductive layer, it electrically separates with the 3rd conductive layer and electrically connects this second electrode.
Aforesaid alternating-current light emitting diode structure with overload protection unit, when wherein said this alternating-current light emitting diode was connected with this power supply, the temperature of this temperature control unit was lower than one of ptc characteristics and triggers temperature.
Aforesaid alternating-current light emitting diode structure with overload protection unit, wherein said temperature detecting layer has a crystalline polymer material and an electric conducting material.
Aforesaid alternating-current light emitting diode structure with overload protection unit, the fusing point of wherein said this crystalline polymer material is between 80 ℃ to 183 ℃.
The utility model compared with prior art has tangible advantage and beneficial effect.By technique scheme, the alternating-current light emitting diode structure that the utlity model has the overload protection unit has advantage and beneficial effect at least:
One, the utility model utilizes the overload protection unit to reduce the electric current of rectification through alternating-current light emitting diode at overload current, in order to reach the effect of protection alternating-current light emitting diode.
Therefore two, the utility model be because the destruction of alternating-current light emitting diode to avoid alternating-current light emitting diode to receive overload current can be protected in the overload protection unit, can prolong alternating-current light emitting diode useful life.
Above-mentioned explanation only is the general introduction of the utility model technical scheme; In order more to know the technological means of understanding the utility model; And can implement according to the content of specification, and for let the above-mentioned of the utility model with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is first sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.
Fig. 2 is second sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.
Fig. 3 is the 3rd sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.
Fig. 4 is the 4th sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.
Fig. 5 be PTC material temperature and resistance concern sketch map.
Fig. 6 is the application implementation view that the utlity model has the alternating-current light emitting diode structure of overload protection unit.
100,101,102,103: alternating-current light emitting diode structure with overload protection
10: alternating-current light emitting diode 20: heat-sink unit
30: overload protection unit 31: conductive reed
32: 33: the first conductive layers in micro electronmechanical unit
34: 35: the second conductive layer of temperature detecting layer
352: the four conductive layers of 351: the three conductive layers
40: AC power 50: heat-conducting layer
51: 60: the first electrodes in surface
70: the second electrodes
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined utility model purpose is taked; Below in conjunction with accompanying drawing and preferred embodiment, its embodiment of the alternating-current light emitting diode structure with overload protection unit, structure, characteristic and the effect thereof that proposes according to the utility model is elaborated.
Fig. 1 is first sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.Fig. 2 is second sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.Fig. 3 is the 3rd sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.Fig. 4 is the 4th sketch map of embodiment that the utlity model has the alternating-current light emitting diode structure of overload protection unit.Fig. 5 be PTC material temperature and resistance concern sketch map.Fig. 6 is the application implementation view that the utlity model has the alternating-current light emitting diode structure of overload protection unit.
As shown in Figure 1, present embodiment is a kind of alternating-current light emitting diode structure 100 with overload protection unit, and it comprises: at least one alternating-current light emitting diode 10; At least one heat-sink unit 20; And at least one overload protection unit 30.For ease of narration, this specification will be defined as overload current above the electric current that alternating-current light emitting diode 10 can bear.
Like Fig. 1 and shown in Figure 2; Above-mentioned alternating-current light emitting diode 10; It can directly use mains ac power supply 40 to drive bright dipping; Therefore do not need again external power transformation rectifying device, have the alternating-current light emitting diode 10 that to select varying number in the alternating-current light emitting diode structure 100 of overload protection unit according to bright demand for use again, for example: two or three alternating-current light emitting diodes 10.
As shown in Figure 1; Above-mentioned heat-sink unit 20; It is in order to carrying each alternating-current light emitting diode 10, and heat-sink unit 20 is connected with each alternating-current light emitting diode 10 heat conduction again, and the material of heat-sink unit 20 can be for having the material of high thermal conductivity coefficient; For example: copper, aluminium, ceramic material ... etc., the heat production during alternating-current light emitting diode 10 bright dippings can be got rid of through heat-sink unit 20 effectively by this.
Yet when heat-sink unit 20 during because of thermal expansion, because heat-sink unit 20 is different with the thermal coefficient of expansion of alternating-current light emitting diode 10, so that because the relativity power that expansion is produced might be destroyed alternating-current light emitting diode structure 100.
Therefore as shown in Figure 2; AC light-emitting two utmost points and tubular construction 101 can further have a heat-conducting layer 50; It is arranged between alternating-current light emitting diode 10 and the heat-sink unit 20, and heat-conducting layer 50 can be a polymer dielectric material again, so heat-conducting layer 50 has the good coefficient of expansion and conductive coefficient; Except can be when heat-sink unit 20 expanded by heating the resilient coating as 20 of alternating-current light emitting diode 10 and heat-sink units, also can help alternating-current light emitting diode 10 that heat production is conducted to heat-sink unit 20.
Like Fig. 1 and shown in Figure 2; Overload protection unit 30; It is series between alternating-current light emitting diode 10 and the AC power 40; Therefore overload protection unit 30 controllable flows avoid alternating-current light emitting diode 10 overloads by this, and the application mode of overload protection unit 30 are of the back through the size of current of alternating-current light emitting diode 10.
As shown in Figure 1, overload protection unit 30 can be a conductive reed 31, and it is to electrically connect with alternating-current light emitting diode 10 and AC power 40, and the conductive reed 31 of different size can have different escape temperature.When overload conditions appears in alternating-current light emitting diode 10; Just cause the temperature of alternating-current light emitting diode 10 constantly to rise; And then make that heat-sink unit 20 temperature also begin to raise, so that the conductive reed 31 on the heat-sink unit 20 begins to be heated, and once the temperature of conductive reed 31 rises to the escape temperature; Conductive reed 31 just can break off, and makes 40 of alternating-current light emitting diode 10 and AC powers become and opens circuit.Temperature up to alternating-current light emitting diode 10 descends and the reduction of drive heat-sink unit 20 temperature; The temperature of conductive reed 31 just can be reduced to below the escape temperature; So that conductive reed 31 automatic involutions are to initial condition, and AC power 40 begins to continue input AC light-emitting diode 10.
In addition, when having served as live stream and continuing to flow through overload conductive reed 31, the temperature of conductive reed 31 also can continue to rise, and once the temperature of conductive reed 31 when rising to the escape temperature, also will cause conductive reed 31 to break off.So conductive reed 31 at the same time between in heated by environment temperature, also can receive overload current heating, provide alternating-current light emitting diode 10 more perfect overload protection by this.
As shown in Figure 2, overload protection unit 30 also can have: a conductive reed 31; An and micro electronmechanical unit 32.Can combine with conductive reed 31 by micro electronmechanical unit 32; And utilize micro electronmechanical unit 32 sensing conductive reed 31 environment temperatures more accurately; So that conductive reed 31 can be carried out escape/involution under appropriate temperature, and then make overload protection unit 30 can bring into play more suitable effect.
As shown in Figure 3, alternating-current light emitting diode structure 102 can further have: one first electrode 60; And one second electrode 70; Wherein first electrode 60 electrically connects alternating-current light emitting diode 10 and AC power 40; Second electrode 70 then electrically connects overload protection unit 30 and AC power 40; Therefore can be beneficial to a plurality of alternating-current light emitting diode structures 102 and form the circuit structure of series connection (as shown in Figure 6) or parallel connection, and then meet various application demand by the setting of first electrode 60 and second electrode 70.
Like Fig. 3 and shown in Figure 4; First electrode 60 and second electrode 70 can be arranged at a surface 51 of heat-conducting layer 50; And the overload protection unit 30 of alternating-current light emitting diode structure 102,103 can be a temperature control unit, and temperature control unit can have: one first conductive layer 33; One temperature detecting layer 34; And one second conductive layer 35.
As shown in Figure 3; First conductive layer 33 can be arranged on second electrode 70 and with second electrode 70 and electrically connect; Temperature detecting layer 34 then can be arranged on first conductive layer 33, and second conductive layer 35 is arranged on the temperature detecting layer 34 and with alternating-current light emitting diode 10 and electrically connects again.
When alternating-current light emitting diode 10 had just begun to be connected with AC power 40, the temperature of temperature control unit was lower than the triggering temperature of ptc characteristics, and this moment, second conductive layer 35 and first conductive layer 33 were channel status.But as long as overload conditions appears in alternating-current light emitting diode 10; Thereby cause the temperature of alternating-current light emitting diode 10, heat-conducting layer 50 and heat-sink unit 20 to begin continuous rising; And the temperature that causes temperature detecting layer 34 is when also increasing, and the resistance value of temperature detecting layer 34 just increases gradually.
When the temperature of temperature detecting layer 34 surpasses the triggering temperature; Second conductive layer 35 and 33 of first conductive layers just form off state; When the temperature of temperature detecting layer 34 descends along with the temperature of alternating-current light emitting diode 10 gradually; The resistance value of temperature detecting layer 34 just can slowly reduce; So that the magnitude of current of 33 of second conductive layer 35 and first conductive layers can little by little increase, so adjustable is through the size of current of alternating-current light emitting diode 10, and then reaches the overload protection of alternating-current light emitting diode structure 102.
As shown in Figure 4, also can electrically connect, so second conductive layer 35 of overload protection unit 30 can have: one the 3rd conductive layer 351 by second conductive layer 35 and second electrode 70; And one the 4th conductive layer 352.The 3rd conductive layer 351 and the 4th conductive layer 352 are each other for electrically separating each other, and the 3rd conductive layer 351 electrically connects with alternating-current light emitting diode 10, and 352 of the 4th conductive layers are electrically connected at second electrode 70.Owing to can electrically connect by the 4th conductive layer 352 and second electrode 70; Therefore first conductive layer 33 of overload protection unit 30 can directly be arranged at the surface 51 of heat-conducting layer 50; Even can directly be attached to alternating-current light emitting diode 10 (figure does not show), more closely to detect the temperature of alternating-current light emitting diode 10.
And the distance of 10 of all above-mentioned overload protection unit 30 and alternating-current light emitting diodes is all less than in 3 centimetres the scope, so that the temperature of each alternating-current light emitting diode 10 or heat-sink unit 20 can conduct to overload protection unit 30 effectively.Setting by heat-conducting layer 50 also can make the temperature of alternating-current light emitting diode 10 pass to more quickly to overload protection unit 30.
And when overload protected location 30 is temperature control unit; The 30 adjustable rectifications of overload protection unit are through the size of current of alternating-current light emitting diode 10; Just the emitting brightness of each alternating-current light emitting diode 10 of may command by this; Make alternating-current light emitting diode structure 102,103 can be designed with the lighting of automatic adjustment brightness function, and then the range of application of expand cooperative exchanges light emitting diode construction 102,103.
The above; It only is the preferred embodiment of the utility model; Not being that the utility model is done any pro forma restriction, though the utility model with the preferred embodiment exposure as above, yet is not in order to limit the utility model; Anyly be familiar with the professional and technical personnel; In not breaking away from the utility model technical scheme scope, make a little change or be modified to the equivalent embodiment of equivalent variations when the technology contents of above-mentioned announcement capable of using, be the content that does not break away from the utility model technical scheme in every case;, all still belong in the scope of the utility model technical scheme any simple modification, equivalent variations and modification that above embodiment did according to the technical spirit of the utility model.
Claims (15)
1. alternating-current light emitting diode structure with overload protection unit is characterized in that it comprises:
At least one alternating-current light emitting diode;
At least one heat-sink unit, its carrying and heat conduction connect this alternating-current light emitting diode; And
At least one overload protection unit, it is series between this alternating-current light emitting diode and the power supply.
2. alternating-current light emitting diode structure according to claim 1 is characterized in that distance between wherein said overload protection unit and this alternating-current light emitting diode is less than 3 centimetres.
3. alternating-current light emitting diode structure according to claim 1 is characterized in that it further has a heat-conducting layer, and it is arranged between this alternating-current light emitting diode and this heat-sink unit.
4. alternating-current light emitting diode structure according to claim 3 is characterized in that wherein said heat-conducting layer is a polymer dielectric material.
5. alternating-current light emitting diode structure according to claim 1 is characterized in that wherein said overload protection unit is a conductive reed.
6. alternating-current light emitting diode structure according to claim 1 is characterized in that wherein said overload protection unit has: a conductive reed, and it electrically connects with this alternating-current light emitting diode and this power supply respectively; And a micro electronmechanical unit, it is incorporated into this conductive reed.
7. alternating-current light emitting diode structure according to claim 3 is characterized in that it further has: one first electrode, and it electrically connects this alternating-current light emitting diode and this power supply; And one second electrode, it electrically connects this overload protection unit and this power supply.
8. alternating-current light emitting diode structure according to claim 7 is characterized in that wherein said first electrode and this second electrode are surfaces that is arranged at this heat-conducting layer.
9. alternating-current light emitting diode structure according to claim 7 is characterized in that wherein said overload protection can be a temperature control unit.
10. alternating-current light emitting diode structure according to claim 9 is characterized in that wherein said temperature control unit has: one first conductive layer; One temperature detecting layer, it is arranged on this first conductive layer; And one second conductive layer, it is arranged on this temperature detecting layer and with this alternating-current light emitting diode and electrically connects.
11. alternating-current light emitting diode structure according to claim 10 is characterized in that wherein said second conductive layer and this second electrode electrically connect.
12. alternating-current light emitting diode structure according to claim 10 is characterized in that wherein said second conductive layer has: one the 3rd conductive layer, itself and this alternating-current light emitting diode electrically connects; And one the 4th conductive layer, it electrically separates with the 3rd conductive layer and electrically connects this second electrode.
13. alternating-current light emitting diode structure according to claim 10, when it is characterized in that wherein said this alternating-current light emitting diode is connected with this power supply, the temperature of this temperature control unit is lower than one of ptc characteristics and triggers temperature.
14. alternating-current light emitting diode structure according to claim 10 is characterized in that wherein said temperature detecting layer has a crystalline polymer material and an electric conducting material.
15. alternating-current light emitting diode structure according to claim 14, the fusing point that it is characterized in that wherein said this crystalline polymer material is between 80 ℃ to 183 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205455471U CN202374534U (en) | 2011-12-20 | 2011-12-20 | Alternative current light emitting diode structure with overload protection unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205455471U CN202374534U (en) | 2011-12-20 | 2011-12-20 | Alternative current light emitting diode structure with overload protection unit |
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| Publication Number | Publication Date |
|---|---|
| CN202374534U true CN202374534U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205455471U Expired - Lifetime CN202374534U (en) | 2011-12-20 | 2011-12-20 | Alternative current light emitting diode structure with overload protection unit |
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| CN (1) | CN202374534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899948A (en) * | 2013-08-20 | 2014-07-02 | 华荣科技股份有限公司 | Led lamp |
-
2011
- 2011-12-20 CN CN2011205455471U patent/CN202374534U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899948A (en) * | 2013-08-20 | 2014-07-02 | 华荣科技股份有限公司 | Led lamp |
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Granted publication date: 20120808 |
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